2N5400

Overview

The onsemi 2N5400 is a PNP general-purpose amplifier and switch designed for high-voltage applications. It features a collector-emitter voltage of 120 V, a continuous collector current of 600 mA, and a total device dissipation of 625 mW at 25°C. The component operates within a junction temperature range of -55°C to +150°C. Key electrical characteristics include a DC current gain (hFE) ranging from 30 to 180, a collector-base breakdown voltage of 130 V, and a transition frequency (fT) between 100 MHz and 400 MHz.

Feature Summary

• Designed as a general-purpose amplifier and switch capable of handling high voltages
• Provides stable switching performance with defined saturation voltages across varying currents
• Suitable for applications requiring moderate power dissipation in standard through-hole packages

Applications

• General purpose amplification circuits
• High voltage switching applications
• Low frequency signal processing

Procurement Notes

Verify the manufacturer origin carefully, as the datasheet indicates Fairchild Semiconductor as the original publisher while onsemi is listed as the supplier. Confirm the specific package variant (TO-92) and lead configuration match your board layout requirements. Check for any recent product change notices or obsolescence announcements that may affect long-term availability.

Selection Notes

Select this component when a PNP transistor with a 120 V collector-emitter rating and 600 mA continuous current capability is required. Ensure the application stays within the 625 mW power dissipation limit at ambient temperatures above 25°C by applying appropriate derating. Verify that the required current gain falls within the specified 30 to 180 range for your circuit design.

Part Context

The 2N5400 belongs to the family of PNP bipolar junction transistors commonly used in discrete semiconductor designs. It serves as a direct replacement for older NPN counterparts like the 2N2222 in complementary pairs, though polarity must be reversed. The TO-92 package provides a compact solution for low-to-medium power electronics where through-hole mounting is preferred.

Replacement Considerations

Public confirmed substitute part numbers: 2N5400G, 2N5400RLRP.